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'UNITED STATES PATENT OFFIOE JOEL G. NORTHRUP, OF CORTLANDVILLE, NEWVYORK.`

PRINTING-PRESS.

Specication of Letters Patent No. 3,985, dated April 1, 1845.

To all whom t may concern Be 1t known that I, JOEL G. NoRTI-IRUP,

of Oortlandville, in the county of Cortland and State of New York, haveinvented certain new and useful Improvements in the Manner ofOonstructimg Printing-Presses; and I do hereby declare that thefollowing is a full and exact description thereof.

In my press I employ four friskets, which are made to traverse up anddown, being governed in their movements by suitable guides, and carriedby pinions and ratchets, to be presently described. In their passage twoof them are, simultaneously, brought opposite Vto two forms of typesituated vertically, between which and two platens they are arrestedduring theperiod necessary for taking the impression; the platens beingbrought up against them by a revolving shaft furnished with armscarrying friction rollers, and the impressions are thereby taken; atthis ,time one of the friskets is situated above the platens, and theother below them; that above, opening for the delivery of a perfected,and the feeding in of a blank sheet.

In the accompanying drawings, Figure 1, is a side elevation of themachine. Fig. 2, is a top view of it, Fig. 3, is an end elevation, inwhich the black lines show the end of the machine when the partsrepresented in red lines are removed. Fig. 4, is a view of the innerside of one of the plates, or cheek pieces, which constitutes the endframe of the press; and Fig. 5, is a vertical section of the press fromside to side in the line a; of Fig. 2.

In each of these figures, where the same parts are represented they aredesignated by the same letters of reference.

A, is the frisket, which is situated at the upper part of the press,where it has opened p to deliver the perfected sheet and receive a newone. A', is that'which is below the forms, the sheet within which hasreceived an impression on one side, and is to receive an impression onthe opposite sideat the same time that the sheet on the one marked A, isreceiving an impression.

A2, A3, Figs. 2, and 5, are the friskets that are situated between theforms and the platens.

B, B, are projecting ledges on the inner sides of the end, or cheekpieces, O, O, of the frame, and B, B', are similar ledges on the edgesof said cheek pieces. The ledges, B, B, may rise about half an inch, andthose marked B, B', about an inch from the face of the plate; thisdifference, however, is not essential; B, is a semicircular continuationof the ledges, B, B, the use of which will presently appear. guidesinthe passage of the frisket. One end ofone of the friskets is shown asdetached from the machine in Fig. 6.

a, a, c, are teeth into which small cog wheels take that carry thefriskets around. The teeth, a', a', are connected by a plate, a, a,whichforms a support to the friskets in a part of their circuit. The teeth,a, a, do not project so far as to touch the ledges, B, as they have, intraversing, to pass back and forth over them. Each frisket consistsoftwoparts, hinged together, one of which falls to deliver and receive asheet; and .it is that half which does not fall that has the teeth, a, aupon it; this half being widened out 'for "that purpose.

\ C', C, are the toothed wheels that carry the frisket, taking into theteeth, u, a, at either end. The shafts, D, D, of these wheels are madeto revolve by the toothed wheel, E, Fig. 3, which gears into the wheels,F, F, on the said shafts, each of which shafts, therefore has threewheels on it namely the two, C, C', that move the `friskets, and that,F, by which they are made to revolve. The wheel E, has no center, but isa hoop received under a circular plate, G, the inner edge of which isshown by the dotted lines. This wheel is to work intermittingly, as itmust remain at rest while the impressions are being taken.

The red line, o, c, o, is the outline of a cam, the periphery of whichis so formed as to raise and depress the inking rollers so as to passthem over the forms at the-proper time. The arrangement of the inkingapparatus does not differ fr0-m that in general use, and

is adapted to presses in a variety of forms. The cam, c, c, c, on themain shaft, H, of the machine, immediately under and attached to, thelarge cog wheel, I, I, which carries the shaft, I-I, intermittingly.Fig. 7, shows the under side of the cam, c, c, 0,' on this there isattached a latch d, cZ, which is conneet-ed to the cam plate c, c, by ascrew at the These ledges serve as end d, allowing it some play, and isforced up by a spring at its back; this latch rises, say half an inch,from the inner Yface of the plate, and when pressure is made upon itsend, ci', it may be forced down, and be received. wit-hin a recess onthe face of the cam. The latch, cl, d', is intended so to act as tocarry the wheel E, E, intermittingly, causing it to make half arevolution for every revolution of the main shaft; e, c, 1s an 1nclinedplane Xed firmly on to the end of the machine, nearly in contact withthe wheel E; a lateral view of this piece s glven at e, c. As the cam,c, c, revolves, the end a5 of the spring latch is brought into contactwith the inclined plane, c, and it is thereby forced into the recess onthe face of the cam, c, c; f, f, are two inclined pieces, or stops, inone piece with, or firmly attached to, the wheel E. From the end f,these pieces rise, as inclined planes, to the end, f', which end formsthe stop against which the end of the spring latch, cZ, is to engage. Inthe .revolving of the cam, c, c, when the spring latch is brought intocontact with the end f', on the left hand side of Fig. 3, it pushes oli1a spring catch, g, (which when in contact with f, detains it in place,)and carries the wheel, E, around until the latch, CZ, arrives on theopposite side when it is forced in by the inclined plane e, e, whichdetaches it from the piece, 7, in consequence of which it leaves thewheel E, at rest during the next half revolution, and so on alternately;during the time this wheel is at rest the impressions are taken.

I have said that the friskets are caused to perform their circuit by theteeth of the wheels C', C', taking into those, a', a, on the edges ofthe frislets. Vhen the friskets are in the situation of those above orbelow the forms, the part marked a, Fig. 6, is contained bet-ween thetoothed wheel C, and the semicircular ledge, B, and it is therebycarried around until the teeth of the wheel C, gear into the spaces ct,a, on the ends of said friskets, which, of course, carries them up anddown; the form of the ledges, B, B, B', B, being such as to guide themin their course. Each of the friskets consists of two leaves, hingedtogether, one of which opens, and falls into the position shown at A,Fig. 3, so as to allow of the removal and supply of a sheet. The openingand` closing ofthe frislets are effected in the following manner. Ateach end of the press there is a sliding bar, lz., Fig. 3, the upper endof which projects over the upper frisket, as shown at 71,', Fig. l. Toan arm, 71,", Fig. 3, at the lower end of each of the sliding bars, 7L,is suspended a weight, J, which causes said bar to descend when it isleft at liberty so to do.

K, is a frame working on joint pins, z', on each side of the machine,and upon this frame the frisket A, that is uppermost, when open, issustained. The frame, K, is furnished with segment teeth that take intoratchet teeth on the sliding bar, L, as seen at j. IVhen the frislet, A,Fig. l, is being raised to its greatest elevation by the wheels C, C,its upper edge is brought into contact with the projections, i, of thesliding bolts, it; and as the frisket rises, the frame K, and theopening half of the frisket will, by the action of the gearing at j, bemade to fall so as to assume the position shown at A, K, Figs. 3, and 5,allowing of the removal, and feeding in, of a sheet. Ihen the frisket.A, begins to descend within the cheeks C, C, by the revolution of thewheels C, C, the weights J, being left at'liberty, will draw the bolts,71 down; and the frame K, with the opening half of the frislet thatrests upon it, will be brought into a vertical position, with the sheetbetween its two sides. The semi-revolution of the wheels C, C', bringsthe descending frisltet, A, and the ascending frisket, A, into theposition for taking an impression, as at A2, A3, Fig. 5, when theirmotion is arrested, in the manner already described.

Having thus described the general course and operation of the friskets,and shown two of them as in the position for receiving an impression, Iwill now proceed to explain the arrangement and operation of those partsconcerned in giving such impression. VVhat may be called the beds of thepress are seen at L, L, F igs. l, 2, and 5; these consist of two flatplates placed vertically, and fixed stationarily in place, by suitableset screws. Against these beds are placed the forms of type, M, M. N, N,are the two platens, which are to be covered with blanketing; these, inFig. 2, are shown in the position in which they stand when impressionsare aboutv being taken, embracing the friskets A2, and A3, between them.In the section, Fig. 5, they are shown at their greatest distance fromthe frislets and forms. When so situated the inking takes place by theinling carriage carrying inking rollers up and down on the face of thetype; 7c, c, are grooves in the cheek pieces that guide the inkingcarriage and rollers; Z, Z, are the two large distributing rollers; m,m, the small, vibrating rollers, and a, n, those that are attached tothe inlting carriagc, and ink the type, all of which, as be# foreremarked, are constructed, and operate in a manner well known. Theplatens are sustained, and slide back and forth, on projecting bars, orledges, 0, o, in one piece with, or firmly affixed to, the cheek pieces,and as the platens move toward the type they carry the friskets, A2, andA3, with them, the upper projecting plate a, Fig. 6, of the frisletsresting, also, on the ledges, 0, 0, the wheels C', C', being then atrest, and in a position which allows the friskets to leave and to bereturned to said wheels, as seen in Fig. 5. The platens are forcedagainst the type by arms, p,- p, on the main shaft carrying frictionrollers, g, g, at their ends where they bear on the backs of theplatens; these arms extend out from` the main shaft, H, of the machine,and the respective pairs being in a right line with each other, operatesimultaneously `on the two platens, the arms, p, p, acting and reactingtogether so as to produce the required motions.

After the platens have been forced out by the arms, p, p, and theimpressions have been taken, they are carried back in the following`nianner. O, Fig. 8, is a cam attached to the end of the shaft, D, thatcarries the upper frisket wheels, C; this cam is on the opposite end ofthe machine from that shown in Fig. 3, Where it acts upon two frictionrollers, 1", 1", affixed to two slides, P, P; which slides act on twolevers, s, s, that force the platens in, after an impression has beentaken; t, t, are the fulcrum of these levers.

Q, Q, are bars thatare attached to the ends of the platens by slidingrods, u, u, on the ends of said bars, and the pressure of the frictionrollers on the ends of the leversV will, consequently, force the platensback, by the cam, O, passing into a position the reverse of that shownin Fig. `8; the depressions, o, e, at the ends of the cam O, are tosteady it during the time it is to remain at rest.

In Fig. 4, y, y, is a sliding piece that rests upon the ledge, o, 0,there being a similar sliding piece on the opposite side, and at eachend of the machine, but not shown in the drawings.

a, a, is a bar to which the ends of the bar Q., Q, are at-tached by therods, u, u, there being four such bars as that shown at a, e; from thelower ends of these and from the sliding pieces, y, y, metal attachmentsare made to the backs of the platens; this particular form of attachmentis not, however, important, but it is that which I have used.

The main shaft, H, which carries the arms that force the platensforward, must have an intermitt-ing movement, while the large cog wheel,I, I, has one of continued rotation. The driving shaft, Z, upon which isaffixed the fly wheel, S, carries one of the ink distributing rollers,Z, and this has on its end, Z, a toothed pinion, T, that drives thewheel I. The wheel I, carries the pinion T', Fig. 3, on the shaft of theother distributing rollers, giving to the inking apparatus the requiredmotion. The wheel I, is not permanently attached to the shaft H, but ison a cylindrical part thereof, and when unclutched revolves upon it, andmay, therefore, leave its shaft at rest, while its own motion iscontinued. The clutching and unclutching of this wheel I effect in thefollowing manner.

U, Fig. 3, is a clutch piece which is as thick again in the middle as itis at its ends, being in the form shown at Fig. 9, when seen edgewise;it lits on a square on the shaft H, but in such manner as to admit it torock endwise, so that one end may be depressed while the other is risingon an inclined plane, or passing over an elevated on the inside of thecam, c, c, Fig. 7 there is a curved, projecting piece, ai, m', risingfrom its inner face, like the piece, co, fw, on the end of the machine;at the end a", this piece is inclined, like the two ends of the piece w,but at its end x', it terminates in a line perpendicular to the cam;002, is a thin plate constituting a spring piece, whichmay be depressed;its intention is merly to hold the end of the clutch'piece, U, steadywhen in contact with the end of m. While it is in this situation, thewheel I, which is attached to the cam c, 0, will carry the shaft H,around, and the impression will be taken by the action of the arms, p,p, on the platens; but when the opposite end of the clutch, U, isbrought into contact with the piece w, the clutch will be raised fromthe stop, at an', the shaft H, will consequently, remain at rest whilethe wheel I, revolves upon it.

I have in the accompanying drawings represented my machine as having theforms placed vertically, and as making two impressions simultaneously;but where this is not desired, the form may be placed hori- Zontally,the four friskets be carried in the same manner with that hereindescribed, and the impressions taken on one side of a sheet only, theother arrangements being substantially the same as those set forth, withsuch modifications as the change of positio-n will require. a

Having thus fully described the manner in which I construct my improvedprint-ing press, and shown the operation of the respective partsthereof, what I claim therein as new, and desire to secure by LettersPatent, is

1. The manner in which I have constructed, combined and arranged thefriskets and the parts by which they are made to traverse through themachine, as set forth. I do not claim the using of four friskets as initself new, but I claim the manner and combination in which I use them,which are essentially different from any heretofore adopted; and these Iclaim whether the form, or

forms, of type be placed vertically, or horimade tofoperateintermittingly, and to carry zontally, and Whether two impressions, orarms. that bear upon the backs of the plantens,4

one only, be taken at the same time. as herein set forth.

2. I also Claim the manner of combining JOEL Gr. NORTHRUP. .5 andarranging the parts by which the power Witnesses:

is applied to the platens, through the inter- THos. P. JONES, medium ofthe revolving shaft, H, Which is BISHOP.

